I have a box running kubuntu 12.1, qcad 3.0 Prof opens fine on that box. I installed 3.0 prof on my laptop, kubuntu 12.1, installed the ia32... libraries to get rid of the libGLU.so.1 error and now I get a segmentation fault message. Any ideas? Thanks.

unfortunately I ran an upgrade on my desktop unit and now I get the same error as on my laptop: ./qcad: line 38: 27089 Segmentation fault (core dumped) LD_LIBRARY_PATH="$DIR" "$binary" $OPT1 $OPT2 "$@"

3.0.9 is a development snapshot (not intended for production use). The reason it works on your Linux system is that it includes the libraries "libgcc_s.so.1" and "libstdc++.so.6". If you copy those over to your QCAD 3.0.0 (stable) installation, you should be able to run 3.0.0 as well.

I am in a similar state to pipo, a recent update to my openSUSE 12.3 system yields the error message referenced above.I have QCAD 3.0.0 installed, purchased in 2011 (was 2.x at the time, then updated).